Toshiba MMD-AP0186HP-E Service Manual page 78

Check code
Outdoor 7-segment display
Main
remote
Check
controller
code
P05 P05
P07 P07
P10 P10
P12
AMP Air Conditioning
Location
of
detection
Sub-code
I/F Open phase detected,
Phase sequence error
SMMS (Series 1)
01: Open phase
detected
02: Phase
sequence error
SMMS-i I/F Detection of open
(Series 4) phase / phase
00: sequence
01: Compressor Inverter DC voltage
1 side (Vdc) error
02: Compressor (compressor)
2 side MG-CTT error
03: Compressor
3 side
01: Compressor IPDU Heat sink overheating
1 side I/F error
02: Compressor
2 side
03: Compressor
3 side
Detected indoor Indoor Indoor overflow error
address unit
Indoor Indoor fan motor error
unit
Description System status
All stop
All stop
All stop
All stop
Stop of
corresponding
unit
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Error detection
Check items (locations)
condition(s)
Phase sequence Check the phase sequence of
error was detected outdoor power wiring.
when the power is Check the outdoor PC board
turned on. (I/F) error.
Open phase error
was detected
when the power is
turned on.
Open phase is Check for defect in outdoor
detected when P.C. board (I/F).
power is turned
on.
Inverter DC
voltage is too high
(overvoltage) or
too low
(undervoltage).
Temperature sensor Check power supply voltage.
built into IGBT (TH) Check outdoor fan system
is overheated. error.
Check heat sink cooling duct
for clogging.
Check IGBT and heat sink for
thermal performance for faulty
installation.
(e.g. mounting screws and
thermal conductivity)
Check for defect in A3-IPDU.
(faulty IGBT built-in
temperature sensor (TH))
Float switch Check float switch connector.
operates. Check operation of drain
Float switch circuit pump.
is open-circuited Check drain pump circuit.
or disconnected at Check drain pipe for clogging.
connector. Check for defect in indoor
P.C. board.
Motor speed Check connection of fan
measurements connector and wiring.
continuously Check for defect in fan motor.
Check for defect in indoor
deviate from target
value. P.C. board.
Overcurrent Check impact of outside air
protection is treatment (OA).
activated.
Check static pressure setting.
MG-CTT: Magnet contactor